A Simplified Theory of Tense Representations and Constraints on Their Composition Michael R Brent author 1990-06 text 28th Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Pittsburgh, Pennsylvania, USA conference publication brent-1990-simplified 10.3115/981823.981839 https://aclanthology.org/P90-1016/ 1990-06 119 126